Keenum, 26, was winless in eight starts for the 2-14 Texans last season. He struggled after a fast start, finishing with nine touchdowns, six interceptions, a 54-percent completion percentage and a passer rating of 78.2.

Keenum will slide into the No. 2 job behind Shaun Hill in St. Louis. The Rams appear committed to the 34-year-old Hill for the time being, but Keenum stands a good chance to see game action if Hill struggles.